quadratic fit {0,0}, {0.41,100}, {0.47,120}, {0.52,140}, {0.56,160}, {0.6,180}, {0.64,200}, {0.69,220}, {0.73,240}, {0.77,260}, {0.83,280}, {0.84,300}, {0.9,400}, {0.95,500}